Which of the following is a physical quantity that has both magnitude and direction?

a. vector

c. resultant

b. scalar

d. frame of reference

How do you know there was a chemical reaction? Check all indicators below. A solid precipitate formed. The color changed. A gas was produced. The reaction absorbed or released heat.

An object at rest has no net force acting on it. True False

Covert 6 hr to a minute

In the solar panel system presented in the video, which of the following was necessary to generate usable electrical current for a home? A - Electrical energy had to be stored in batteries for several days. B - DC power had to be converted to AC.

Which is a result of dormancy?

The correctly balanced equation for H2O2 → H2O + O2 is

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic